Abstract
The processes through which nitrogen oxides are generated and reduced in the course of firing different kinds of fuel in a circulating fluidized bed are addressed. All experimental studies were carried by the authors on their own laboratory installations. To construct a model simulating the generation of nitrogen oxides, the fuel combustion process in a fluidized bed was subdivided into two stages: combustion of volatiles and combustion of coke residue. The processes through which nitrogen oxides are generated and reduced under the conditions of firing fuel with shortage of oxygen (which is one of efficient methods for reducing nitrogen oxide emissions in firing fuel in a fluidized bed) are considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
V. A. Munts, Yu. G. Munts, A. P. Baskakov, and E. Yu. Pavlyuk, “Regularities pertinent to the formation of nitrogen oxides during the combustion of coals and shales in a fluidized bed,” www.itp.nsc.ru/confer-ences/gtt8/files/68Munts.pdf.
Ya. B. Zel’dovich, P. Ya. Sadovnikov, and D. A. Frank-Kamenetskii, Nitrogen Oxidation during Combustion (Nauka, Moscow, 1947) [in Russian].
V. I. Babii and Yu. F. Kuvaev, Combustion of Pulverized Coal and Calculation of a Pulverized-Coal Flame (Energoatomizdat, Moscow, 1986) [in Russian].
T. V. Vilenskii, “Calculating the dynamics of nitrogen oxide formation in firing pulverized fuel,” Izv. Vyssh. Uchebn. Zaved., Energetika, No. 12, 66–70 (1986).
I. I. Gusev, L. I. Zaichik, and N. Yu. Kudryavtsev, “Simulation of nitrogen oxide formation from solid fuel combustion in furnace chambers,” Therm. Eng., No. 1, 31 (1993).
V. A. Borodulya and L. M. Vinogradov, Solid Fuel Combustion in a Fluidized Bed (Nauka i Tekhnika, Minsk, 1980) [in Russian].
I. A. Yavorskii, Physicochemical Principles of Firing Solid Fossil Fuels and Graphites (Nauka, Novosibirsk, 1973) [in Russian].
I. V. Avgushevich, T. M. Bronovets, and I. V. Eremin, Analytical Chemistry and Technical Analysis of Coal (Nedra, Moscow, 1987) [in Russian].
J. H. Pohl and A. F. Sarofin, “Devolatilization and oxidation of coal nitrogen,” in Proceedings of the 16th International Symposium on Combustion, Combustion Institute, Pittsburgh, 1977.
G. De Soete, in Proceedings of the 23rd International Symposium on Combustion, Combustion Institute, Pittsburgh, 1977, pp. 1257–1264.
W. Lin and C. M. Van der Bleek, “The SOx/NOx emissions in the circulating fluidized bed combustion of coal,” in Proceedings of the 3rd International Conference on CFB, Nagoya, Japan, October 15–18, 1990.
Combustion Chemistry, Ed. by W. C. Gardiner (Springer, New York, 1984; Mir, Moscow, 1988).
A. S. Predvoditelev, L. N. Khitrin, O. A. Tsukhanova, et al., Carbon Combustion (Akad. Nauk SSSR, Moscow, Leningrad, 1949) [in Russian].
A. P. Baskakov, N. F. Filippovskii, V. A. Munts, and A. A. Ashikhmin, “Calculating the temperature of particles burning in a fluidized bed of inert material,” Inzh. Fiz. Zh. 52, 788–793 (1987).
K. E. Makhorin and P. A. Khinkis, Fluidized Bed Combustion of Fuel (Naukova Dumka, Kiev, 1989) [in Russian].
M. Kubin, Fluidized Bed Combustion of Solid Fuel (Energoatomizdat, Moscow, 1991) [in Russian].
V. A. Munts, “Fluidized bed combustion of solid fuel,” in Fluidization, Ed. by V. G. Ainshtein and A. P. Baskakov (Khimiya, Moscow, 1991) [in Russian].
L. E. Amand and B. Leckner, “Emissions of nitrogen oxide from a circulating fluidized bed boiler — the influence of design parameters,” in Proceedings of the 2nd International Conference on CFB, Compiegne, France, March 14–18, 1988.
G. De Soete, US-EPA Report 600/8-90-049, 1990.
J. E. Johnsson, L. E. Amand, and B. Leckner, “Modelling of NOx formation in a circulating fluidized bed boiler,” in Proceedings of the 3rd International Conference on CFB, Nagoya, Japan, October 15–18, 1990.
K. A. Gordin and V. M. Maslennikov, “On preventing nitrogen oxide emissions in firing organic fuels,” Fiz. Goreniya Vzryva, No. 1, 58–65 (1986).
B. M. Gibbs, F. J. Pereira, and J. M. Beer, “Coal combustion and NO formation in an experimental fluidized bed,” Inst. Fuel Symposium No. 1, Fluidized Combustion Paper D.6, 1975, pp. 1–13.
M. Yu. Chernetskii, A. A. Gavrilov, and A. A. Dekterev, “Numerical Investigation of Pulverized-Coal Fuel Combustion Process for Estimating the Efficiency of Nitrogen Oxide Reduction Technologies,” in Proceedings of the 7th All-Russia International Conference “Solid Fuel Combustion,” Novosibirsk, 2009, Part 3.
T. Furusawa, “Nitric oxide reduction in an experimental fluidized bed coal combustor,” in Proceedings of the 2nd International Conference on Fluidization, Cambridge University, 1978.
P. M. Walsh, “Nitric oxide reduction in the freeboard of a fluidized bed coal combustor,” in Proceedings of the 19th International Symposium on Combustion, Technion-Israel Institute of Technology, Haifa, Israel, 1982.
H. Ishizuka, K. Hyvarinen, and A. Morita, “Experimental studies on NOx reduction in CFB coal combustion,” in Proceedings of the 2nd International Conference on CFB, Compiegne, France, March 14–18, 1988.
V. A. Munts, A. A. Volkova, Yu. N. Fedorenko, and V. E. Shafranskii, “Investigating the Reduction of Flue Gas Nitrogen Oxides by Means of Brown Coal Semicoke,” Therm. Eng., No. 5 (1987).
R. Kobylecki and Z. Bis, “Emission of SO2 and NOx from a large-scale CFBC — effect of cyclone separation efficiency,” in Proceedings of the 9th International Conference on Circulating Fluidized Beds, Hamburg, Germany, May 13–16, 2008.
J. Zhao, C. J. Lim, C. Brereton, et al., “NO formation and destruction in a CFB: two-zone model,” in Proceedings of the 9th International Conference on Circulating Fluidized Beds, Hamburg, Germany, May 13–16, 2008.
O. V. Nikitina, V. I. Guseva, Yu. M. Omel’chenko, and I. M. Lokhmanova, “Nitrogen oxide reduction in the course of its interaction with carbon at temperatures up to 1000°C,” Khim. Fiz., No. 8, 1099–1102 (1983).
S. Iton, Y. Okada, and G. Higuchi, “Combustion properties of wide range fuels on circofluid,” in Proceedings of the 3rd International Conference on CFB, Nagoya, Japan, October 15–18, 1990.
Author information
Authors and Affiliations
Additional information
Original Russian Text © V.A. Munts, Yu.G. Munts, A.P. Baskakov, A.S. Proshin, 2013, published in Teploenergetika.
Rights and permissions
About this article
Cite this article
Munts, V.A., Munts, Y.G., Baskakov, A.P. et al. Generation and reduction of nitrogen oxides in firing different kinds of fuel in a circulating fluidized bed. Therm. Eng. 60, 791–801 (2013). https://doi.org/10.1134/S0040601513110086
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040601513110086